The story takes place in 1943, when the Sino-Japanese War was at its most critical period. The high-level traitors of the Wang Puppet regime were in trouble. Li Shiqun, commander of the pseudo-Qingxiang Committee and director of the investigation department, was poisoned by the Japanese. Dai Suichang, his trusted secretary-general, escaped by chance and prepared to surrender to the Chongqing National Government. In view of the fact that Dai had a large number of highly confidential information about the Japanese and the Wang Puppet Government, the CCP sent Shen Yingjie (played by Wu Jian), the chief of special security, to assist the Suzhou underground armed work team in trying to capture Dai Suichang (played by Zhu Hui) on the way. At the same time, Chongqing, especially the forces in collusion with the Wang Puppet Government, would never allow such a key figure to fall into the hands of the Japanese or the CCP. They sent Gu Weimin, a special commissioner from Suzhou, code-named Crow, to meet Dai Suichang. In addition, the Japanese and the Wang Puppet regime acted accordingly. The forces of all parties collided with each other and fought openly and secretly around a key figure...